Drive device for opening/closing body for vehicle

Abstract

A drive device includes a drum housing rotatably supports a drum, allows an outer tube end to be inserted into an outer tube connecting portion and allows a wire to pass through a wire passage portion, and a drive member rotates the drum. An anti-deflection portion limits deflection of the wire and is formed on the drum housing/drive member. The anti-deflection portion includes a range surrounded by a line connecting one end of the formation range of the spiral groove and one end of the formation range of the insertion hole at the outer tube end connected to the outer tube connecting portion and a line connecting the other end of the spiral groove formation range and the other end of the insertion hole formation range at the end of the outer tube connected to the outer tube connecting portion, in the rotational axis direction of the drum.

The invention claimed is: 
     
       1. A drive device for an opening/closing body for a vehicle, said driving device opening and closing said opening/closing body by driving a wire, wherein said driving device comprises:
 an outer tube having an insertion hole into which said wire is inserted; 
 a columnar drum on a peripheral surface of which a spiral groove is formed, said wire being wound in said spiral groove; 
 a drum housing including: a housing portion which rotatably supports said drum, an outer tube connecting portion into which an end of said outer tube is insertable, and a wire passage portion which allows said wire to pass through between said outer tube connecting portion and said housing portion; and 
 a drive member which is installed to said drum housing and rotates said drum, 
 wherein an anti-deflection portion which limits deflection of said wire in a rotational axis direction of said drum is formed on said drum housing or said drive member, 
 wherein said anti-deflection portion is provided within a range surrounded by a line which connects one end of a formation range of said spiral groove and one end of a formation range of said insertion hole at said end of said outer tube that is connected to said outer tube connecting portion and a line which connects the other end of said formation range of said spiral groove and the other end of said formation range of said insertion hole at said end of said outer tube that is connected to said outer tube connecting portion, in said rotational axis direction of said drum, 
 wherein said anti-deflection portion comprises: a first anti-deflection portion which limits said deflection of said wire in a first direction along said rotational axis direction of said drum; and a second anti-deflection portion which limits said deflection of said wire in a second direction opposite to said first direction, 
 wherein said wire passage portion is a wire passage groove having an opening which is open in said first direction, said first anti-deflection portion being provided in said wire passage groove, and 
 wherein a clearance which makes insertion and removal of said wire through said opening possible is formed between a side surface of said wire passage groove and said first anti-deflection portion. 
 
     
     
       2. The drive device for an opening/closing body for a vehicle according to  claim 1 , wherein said wire passage portion forms said clearance by widening a width of said opening at a portion where said first anti-deflection portion is provided. 
     
     
       3. A drive device for an opening/closing body for a vehicle, said driving device opening and closing said opening/closing body by driving a wire, wherein said driving device comprises:
 an outer tube having an insertion hole into which said wire is inserted; 
 a columnar drum on a peripheral surface of which a spiral groove is formed, said wire being wound in said spiral groove; 
 a drum housing including: a housing portion which rotatably supports said drum, an outer tube connecting portion into which an end of said outer tube is insertable, and a wire passage portion which allows said wire to pass through between said outer tube connecting portion and said housing portion; and 
 a drive member which is installed to said drum housing and rotates said drum, 
 wherein an anti-deflection portion which limits deflection of said wire in a rotational axis direction of said drum is formed on said drum housing or said drive member, 
 wherein said anti-deflection portion is provided within a range surrounded by a line which connects one end of a formation range of said spiral groove and one end of a formation range of said insertion hole at said end of said outer tube that is connected to said outer tube connecting portion and a line which connects the other end of said formation range of said spiral groove and the other end of said formation range of said insertion hole at said end of said outer tube that is connected to said outer tube connecting portion, in said rotational axis direction of said drum, 
 wherein said anti-deflection portion comprises: a first anti-deflection portion which limits said deflection of said wire in a first direction along said rotational axis direction of said drum; and a second anti-deflection portion which limits said deflection of said wire in a second direction opposite to said first direction, 
 wherein said wire passage portion is a wire passage groove having an opening which is open in said first direction, 
 wherein said housing portion is open in said first direction, 
 wherein positions of said first anti-deflection portion and said second anti-deflection portion are mutually different in a longitudinal direction of said wire passage groove, and 
 wherein said wire passage groove comprises a through-hole in a bottom portion thereof in said second direction which faces said opening at least at a position corresponding to said first anti-deflection portion.